chasingmytail, presumably they are only using items available in John Lewis?
An independent designer will be free to use products from all a whole range of suppliers.
Have a look on Pinterest and Instagram from things you like. Colours (light? Dark? Pastels? Bright? Jewel tones?) Pattern or plain? Textures? Carpet? Rugs? Hard floors? Curtains, blinds or shutters?
If you are truly at a loss as to what you want then perhaps an interior designer is worth having. Some are very set on their own ‘signature’ style but most good ones will work with you and design a scheme within your budget that suits how you live, what you want from the room and what you like. They’ll also incorporate existing favourite or heirloom pieces in, if you want them to. It’s your home. You don’t want to live in someone else’s vision, the designer is there to help you realise a collaborative vision, one that feels like home to you.
I love interiors. My own home has developed over the years, inspired by places we’ve been (hotels, museums, galleries, bars, shops, friends’ houses you name it!), magazines, tv show sets, Pinterest, Instagram. I collect paintings and so that’s just developed over time. I don’t buy pictures or prints to ‘fit’ my decor, they are quite an eclectic mix and they tend to work. Sometimes I shuffle them around or reframe so they work better in a scheme.